java 通路kafka_java用戶端通路kafka

kafka版本：kafka_2.11-0.11.0.1.tgz

centos7

關閉防火牆：systemctl stop firewalld.service

在kafka中配置檔案：

listeners=PLAINTEXT://192.168.80.132:9092

在java建立consumer：

package com.vincent;

import org.apache.kafka.clients.consumer.ConsumerRecord;

import org.apache.kafka.clients.consumer.ConsumerRecords;

import org.apache.kafka.clients.consumer.KafkaConsumer;

import java.util.Arrays;

import java.util.Properties;

public class Test {

public static void main(String[] args) {

Properties props = new Properties();

props.put("bootstrap.servers", "192.168.80.132:9092");

props.put("group.id", "test");

props.put("enable.auto.commit", "true");

props.put("auto.commit.interval.ms", "1000");

props.put("session.timeout.ms", "30000");

props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

KafkaConsumer consumer = new KafkaConsumer<>(props);

consumer.subscribe(Arrays.asList("test"));

while (true) {

ConsumerRecords records = consumer.poll(100);

for (ConsumerRecord record : records)

System.out.printf("offset = %d, key = %s, value = %s", record.offset(), record.key(), record.value());

}

}

}